The pane at the top of the tab enables a particular Priority Description and its Attribute Value to be selected. A Popup Menu is available (mouse right-click) with options of Add, Editing, Delete. This is used to add a new priority, edit an existing priority, or remove an existing priority. The description is user-defined, the attribute value must match the attribute value for the particular priority.

The associated Up and Down buttons are for rearranging the 'Order' of the priorities, from top to bottom. The least important priority is at the top; the most important at the bottom. From a pair of clashing elements, the auto-assignment process selects the discipline of the less important element to be the owner of the clash, that is, the element with the priority that is nearer to the top of the list.

The Description field is for specifying the text to appear as the report column header for the attribute values.

The Attribute box enables the priority attribute to be selected. Clash Manager will search for the attribute on the clashing item, and if not found there, will search the owning hierarchy for it. If Not Used is selected, the PRIORITY attribute does not appear in the Clash Manager GUI. Note that PRIORITY is designed to produce a modest number of look-up records, when a value is used as a wildcard. An attribute, such as a NAME that would return a large number of values should not be used.

The Discover button automatically produces a list of priority descriptions and attributes that are applicable to elements in clashes that have been discovered by Clash Manager. Each Description of the various priorities is formed by a concatenation of the attribute name followed by the particular attribute value. For example, for an attribute 'priority' and a value 10, the description is 'priority 10'. Each listed attribute value is available as a Regular Expression wildcard (see Notes on Wildcards) for use in assignment and acceptance rules. The attribute values are preceded by ^ and followed by $ to make sure that only complete strings are matched, for example, ^10$.

Following operation of the Discover button to determine all available values, the resultant data can be edited to give acceptable ranges of priorities. For example, returned priorities with values of ^10$ through ^19$ could be edited to a single description ' Low Priority' with a value ^1[0-9]$.